Property of YAG: Ce phosphors powder prepared by mixed solvothermal method

YAG: Cc phosphors were synthesized by a mixed solvothermal method. The effect of washing method of precursor, synthesis temperature, holding time and filling factor on the property of YAG: Ce had been researched by changing the synthetic conditions. The results show that as the increase of the synthesis temperature, the prolonging of the holding time and the rise of filling factor, the pressure of synthesis reaction system and the nucleation rate of grains increase, the rate of mass transfer and grain growth speed up. The degree of crystallization grows up, the crystal structure of YAG: Ce phase is improved. The particles are spherical and the distribution of particle size is uniform. The Ce3+ ions easily enter the YAG lattice and the distribution of Ce3+ ions is more homogeneous. The fluorescence property of YAG: Ce enhances. In this research, the YAG: Ce phosphor with good property can be obtained at 230-250 degrees C for 15-20 h with the filling factor 90%. The mean particle size is 1.4 mu m. This synthetic method has good potential applications. (C) 2010 Elsevier B.V. All rights reserved.